later this morning, president obama will deliver a series of concrete proposals to bring gun violence under control. in response to the horrific sandy hook school shooting, vice president joe biden has met with the nra, healthcare professionals, gun control groups and a rep from walmart, the nation's largest gun seller. the president will lay out the measures created from those meetings. likely on the list: a push for an assault weapons ban and better background checks. the president speaks at 11:45 eastern. children who wrote letters expressing concerns about gun violence in schools will join him. a new york city school bus driver strike starts today, affecting 152,000 students. more than 8,000 drivers and support workers are walking off the job to protest a lack of job protections. new york city mayor michael bloomberg has proposed a competetive bid process for school bus contracts in order to save money. the union is upset it may impact current drivers. this strike is the first such job action by unionized new york school bus drivers in more than three decades. massive job cuts are